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LG Ceiling Cassette Mini Split LGRED° Heat Pump System - 4-Zone - 42k BTU Outdoor - 9k + 9k + 9k + 18k Indoor - 21.5 SEER2 - R-32

Model: KUMXA421A 3-KNUDB091A KNUDB181A Item Number: 164741
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
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LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
LG KUMXA421A 3-KNUDB091A KNUDB181A
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Our Price: $9,693.00
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$122 / Month
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132 fixed monthly payments required.
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LG Ceiling Cassette Mini Split LGRED° Heat Pump System - 4-Zone - 42k BTU Outdoor - 9k + 9k + 9k + 18k Indoor - 21.5 SEER2 - R-32
LG Ceiling Cassette Mini Split LGRED° Heat Pump System - 4-Zone - 42k BTU Outdoor - 9k + 9k + 9k + 18k Indoor - 21.5 SEER2 - R-32 Model: KUMXA421A 3-KNUDB091A KNUDB181A Item Number: 164741
$9,693.00
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Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
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Free Lift Gate
*This product qualifies for Free Lift Gate Service. Items over 100lbs normally ship via semi-truck. Select this service if you need the product lowered to the ground curbside. To learn more about Lift Gate Service, read our shipping policy.
Specification Highlights
    Condition
    New Learn More
    New
    This product is new and has never been used. It's in its original packaging, which has not been opened.
    Weight
    334.4 Pounds Learn More
    334.4 Pounds
    Total weight of the product and any included accessory/components. This total is not the shipping weight, as it does not include packing material, which may increase the overall shipping weight of this product.
    Type
    Ceiling Cassette
    Product Line
    LGRED Heat
Bundle Includes 10 items
  • product image
    (1) LG Multi F MAX LGRED° Outdoor Condenser - 2-6 Zones - 42k BTU - R-32 (KUMXA421A)
  • product image
    (1) LG Ceiling Cassette without Grille - Multi or Single-Zone - 18k BTU - R-32 (KNUDB181A-NG)
  • product image
    (3) LG Ceiling Cassette without Grille - Multi or Single-Zone - 9k BTU - R-32 (KNUDB091A-NG)
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Indoor Unit Sizes
Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. For example (9k + 12k) means the system includes a 9k BTU unit and a 12k BTU unit.
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Features & Bundle Details
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Features & Bundle Details

Overview for LG KUMXA421A 3-KNUDB091A KNUDB181A

LG's devotion to providing efficient ductless solutions can be seen across the Multi F line. This ceiling cassette heat pump system pairs a powerful KUMXA421A outdoor condenser with four ceiling cassette indoor units. LG's Multi F ceiling cassette indoor units feature four air outlets which allow them to provide consistent air flow to the furthest reaches of large rooms. In addition to providing excellent coverage, the ceiling cassette indoor units also feature an exceptionally low profile. When installed, a grille less than 1" thick is the only visible clue that your room is receiving efficient heating and cooling. This system also features LGRED° Heat technology, which boasts superior heating performance in extreme cold weather climates.
  • Inverter Technology
  • LG's heat pump systems are designed with efficient inverter technology. An electronic expansion valve and a variable speed compressor carefully regulate the refrigerant flow, reducing energy consumption and allowing for consistent, accurate temperatures.
  • Air Flow Options
  • This unit offers two automated air flow options: Swing Mode and Swirl Wind mode. Any of these modes can be activated to provide optimal circulation specific to your home.
  • Integrated Base Pan Heater
  • Base pan heaters come factory installed on all LGRED° outdoor condensers in order to mitigate the risk of damage caused by freezing condensate.
  • Gold Fin Protection
  • To ensure the reliability and longevity of the KUMXA421A's heat exchanger, LG employs a Gold Fin coating that prevents corrosion and improves durability.
  • Quiet Design
  • Thanks to a brushless direct current fan motor, both the outdoor and indoor units in this system produce less mechanical and electrical noise, allowing them to provide comfort that doesn't disrupt your home.
  • Jet Cool
  • This LG unit features a Jet Cool operation mode for rapid cooling. In this mode, the indoor unit will temporarily adjust the set point and fan speed for 30 minutes to quickly cool your zone.
  • Automated Operation
  • Auto operation mode continually compares your zone's current and desired temperatures and uses that data to intelligently adjust the unit's fan speed and refrigerant flow to provide optimal comfort.
  • Sleep Mode
  • With the Sleep Mode and Timer functions, you can set this indoor unit to save energy at night. Sleep Mode will incrementally adjust temperature for an hour before the Timer function automatically deactivates the unit.
  • Condensate Protection
  • Condensate overflow can damage your indoor unit and your home. An internal condensate pump with 27.5" of lift protects the indoor unit through reliable, effective condensate removal.
  • Dehumidify
  • LG's indoor units include a dehumidifying operation mode. In this mode, the unit's internal sensors monitor temperature and modify the set point and fan speed to remove moisture from the air.
  • Improved Air Quality
  • These mini split indoor units include an anti-fungal filter to keep your air clean. This filter captures contaminants like dust and bacteria, and it is washable to ensure long term air quality.
  • Hot-Start
  • When the Hot-Start function is enabled, the indoor unit's fan will not engage until the outdoor condenser has had the opportunity to warm the indoor coil. This prevents the unit from blowing cold air during heating operations.
  • Enhanced Connectivity
  • Inverter Technology
  • Product Note
    This product requires the following accessories for installation:
    • Line Set - This double insulated tubing transfers refrigerant efficiently between your outdoor condenser and indoor units.
    • Disconnect Box & Electrical Whip Kit - The Disconnect Box & Whip Kit provides a safe and simple way to connect your outdoor condenser to your fuse box.
    • Connecting Wire - This durable, insulated wire provides power to your indoor units from your outdoor condenser.
    • Outdoor Condenser Plastic Pad or Wall Bracket - We recommend outdoor condensers should not be placed directly on the ground. An outdoor condenser pad or wall bracket will provide a stable way to mount your condenser free from obstructions and debris.
    • Adding these accessories to your order will provide a complete, ready-to-install mini split system. You will need a line set for each additional indoor unit.
    LG products include a 10-year warranty with the requirement that installation is completed by a licensed contractor and that the product is registered at https://lg-dfs-warranty.com/ within 60 days of installation.
    Bundle Includes 10 items
    Specifications
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    Specifications

    Included In This Bundle

    Bundle Overviewgrey arrow icon
    General Information
    Type
    Ceiling Cassette
    Product Line
    LGRED Heat
    Product Category
    Mini Split Heat Pump System
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Number of Zones Learn More
    Number of Zones
    A zone is a room or area within a building that has its own temperature control.
    4
    Refrigerant Type
    R-32
    Indoor Unit Size(s) Learn More
    Indoor Unit Size(s)
    Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
    9 + 9 + 9 + 18
    Base Pan Heater Included
    Yes
    Outdoor Unit Size
    42000 BTU
    DOE Regional Compliance Learn More
    DOE Regional Compliance
    In 2015, the US Department of Energy broke the country into three regions - North, Southeast, and Southwest - and set legal standards for energy efficiency within each region.
    Nationwide
    Performance
    Low Ambient Heating
    Yes
    Minimum Outdoor Temperature for Heating Learn More
    Minimum Outdoor Temperature for Heating
    This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures.
    -13 F
    Minimum Outdoor Temperature for Cooling
    14 F
    SEER2 Learn More
    SEER2
    The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. SEER2 (Seasonal Energy Efficiency Ratio) is a measurement of cooling efficiency over a typical cooling season. It is useful for comparing energy efficiency of cooling systems. The higher the SEER2, the more energy efficient the system.
    21.5
    EER2 Learn More
    EER2
    The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. EER2 (Energy Efficiency Ratio) is a measurement of cooling efficiency under fixed conditions. It is useful for comparing units that will operate consistently under one set of conditions (e.g. server room). The higher the EER2, the more efficient the system.
    13.8
    HSPF2 Learn More
    HSPF2
    The U.S Department of Energy has raised the minimum rating requirements starting in 2023 that include updated testing conditions and metrics to better reflect real-world conditions. HSPF2 (Heating Seasonal Performance Factor) is a measure of heating efficiency for heat pumps. It is useful for comparing energy efficiency of heat pumps. The higher the HSPF2, the more efficient the system.
    11.0
    Electrical Data
    Voltage
    208/230 Volts
    Phase
    1
    Frequency
    60 Hz
    Dimensions
    Product Weight
    334.4 Pounds
    Shipping Weight
    378.2 Pounds
    Certifications
    Energy Star Listed
    Yes
    AHRI Certified
    Yes
    AHRI Reference Number
    215402347
    General Information
    Type
    Outdoor Condenser
    Product Line
    LGRED Heat
    Product Category
    Mini Split System Components
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Maximum Number of Zones
    6
    Multi-Zone Compatible
    Yes
    Refrigerant Type
    R-32
    Installation Location
    Outdoor
    Base Pan Heater Included
    Yes
    Performance
    Cooling BTU
    42000
    Cooling Capacity
    42000 BTU
    Heating Capacity
    48000 BTU
    Maximum Sound Level Learn More
    Maximum Sound Level
    Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
    56 dB
    Low Ambient Heating
    Yes
    Minimum Outdoor Temperature for Heating Learn More
    Minimum Outdoor Temperature for Heating
    This is the lowest rated outdoor temperature for heating operation. Because heat pumps rely on heat available in outdoor air, the amount of heat they are able to supply decreases with outdoor temperatures.
    -13 F
    Minimum Outdoor Temperature for Cooling
    14 F
    Electrical Data
    Voltage
    208/230 Volts
    Phase
    1
    Frequency
    60 Hz
    Minimum Circuit Ampacity
    32.5 Amps
    Recommended Breaker Size
    40 Amps
    Dimensions
    Maximum Line Length
    475.7 Feet
    Gas Connection Size
    3/4 Inch
    Liquid Connection Size
    3/8 Inch
    Product Height
    54 17/48 Inches
    Product Width
    37 19/48 Inches
    Product Depth
    13 Inches
    Product Weight
    218.3 Pounds
    Shipping Weight
    239.2 Pounds
    Certifications
    Energy Star Listed
    Yes
    CSA Listed
    Yes
    AHRI Certified
    Yes
    Warranty Information
    Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab.
    5 Years
    Compressor Warranty
    7 Years
    General Information
    Type
    Ceiling Cassette
    Product Line
    Multi F
    Product Sub-line
    Four-Way Ceiling Cassette
    Product Category
    Mini Split System Components
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Multi-Zone Compatible
    Yes
    Refrigerant Type
    R-32
    Remote Control
    Wireless
    Indoor Unit Size(s) Learn More
    Indoor Unit Size(s)
    Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
    18
    Installation Location
    Indoor
    Grille
    Not Included
    Required Grille Model
    PT-QAGW0
    Performance
    Cooling BTU
    18000
    Cooling Capacity
    18000 BTU
    Heating Capacity
    20800 BTU
    Moisture Removal
    3.1 Pints/Hour
    Maximum Air Flow
    459 CFM
    Minimum Air Flow
    388 CFM
    Minimum Sound Level
    36 dB
    Maximum Sound Level Learn More
    Maximum Sound Level
    Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
    41 dB
    Electrical Data
    Voltage
    208/230 Volts
    Phase
    1
    Frequency
    60 Hz
    Dimensions
    Gas Connection Size
    1/2 Inch
    Liquid Connection Size
    1/4 Inch
    Product Height
    10 1/12 Inches
    Product Width
    22 7/16 Inches
    Product Depth
    22 7/16 Inches
    Product Weight
    30.9 Pounds
    Shipping Weight
    37 Pounds
    Certifications
    CSA Listed
    Yes
    AHRI Certified
    Yes
    Warranty Information
    Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab.
    5 Years
    General Information
    Type
    Ceiling Cassette
    Product Line
    Multi F
    Product Sub-line
    Four-Way Ceiling Cassette
    Product Category
    Mini Split System Components
    Operating Mode Learn More
    Operating Mode
    Some products are only capable of cooling, while others can either heat or cool a space. Some products heat via "heat pump" technology while others use electric heating elements.
    Heating and Cooling
    Multi-Zone Compatible
    Yes
    Refrigerant Type
    R-32
    Remote Control
    Wireless
    Indoor Unit Size(s) Learn More
    Indoor Unit Size(s)
    Mini split systems can have one or more indoor units connected to a single outdoor unit. Indoor Unit Size(s) specifies what indoor unit sizes are used in a system. We have combined 6k and 7k indoor units to enhance searchability.
    9
    Installation Location
    Indoor
    Grille
    Not Included
    Required Grille Model
    PT-QAGW0
    Performance
    Cooling BTU
    9000
    Cooling Capacity
    9000 BTU
    Heating Capacity
    10400 BTU
    Moisture Removal
    1.5 Pints/Hour
    Maximum Air Flow
    300 CFM
    Minimum Air Flow
    230 CFM
    Minimum Sound Level
    30 dB
    Maximum Sound Level Learn More
    Maximum Sound Level
    Sound levels are measured in decibels (dB). The lower the decibel rating, the less noise the product makes. As an example, a ticking watch is 20 dB while on the other end of the scale, a lawn mower is around 90 dB.
    36 dB
    Electrical Data
    Voltage
    208/230 Volts
    Phase
    1
    Frequency
    60 Hz
    Dimensions
    Gas Connection Size
    3/8 Inch
    Liquid Connection Size
    1/4 Inch
    Product Height
    8 5/48 Inches
    Product Width
    22 7/16 Inches
    Product Depth
    22 7/16 Inches
    Product Weight
    28.4 Pounds
    Shipping Weight
    34 Pounds
    Certifications
    CSA Listed
    Yes
    AHRI Certified
    Yes
    Warranty Information
    Parts Warranty Learn More
    Parts Warranty
    A warranty is a safeguard from defects in manufacturing and can vary in length and terms. Some manufacturers require registration for extended warranty benefits, be sure to check out features and the warranty document. To see the manufacturer's warranty statement, click on the Manuals tab.
    5 Years
    General Information
    Type
    Branch Box
    Product Line
    Multi F
    Product Category
    Mini Split Accessories
    Ports Quantity
    4
    Performance
    Maximum Port Capacity
    24000 BTU
    Maximum Total Port Capacity
    73000 BTU
    Electrical Data
    Voltage
    208/230 Volts
    Power Consumption
    97 Watts
    Phase
    1
    Frequency
    60 Hz
    Dimensions
    Suction Connection Size
    3/4 Inch
    Liquid Connection Size
    3/8 Inch
    Line Set A Liquid Connection
    1/4 Inch
    Line Set A Gas Connection
    3/8 Inch
    Line Set B Liquid Connection
    1/4 Inch
    Line Set B Gas Connection
    3/8 Inch
    Line Set C Liquid Connection
    1/4 Inch
    Line Set C Gas Connection
    3/8 Inch
    Line Set D Liquid Connection
    1/4 Inch
    Line Set D Gas Connection
    3/8 Inch
    Product Height
    6 7/16 Inches
    Product Width
    15 3/8 Inches
    Product Depth
    25 3/8 Inches
    Product Weight
    19.4 Pounds
    Shipping Weight
    22.9 Pounds
    Certifications
    CSA Listed
    Yes
    General Information
    Type
    Grille
    Product Line
    Multi F
    Product Sub-line
    Four-Way Ceiling Cassette
    Product Category
    Mini Split Accessories
    Installation Location
    Indoor
    Dimensions
    Product Height
    1 3/8 Inches
    Product Width
    24 19/48 Inches
    Product Depth
    24 19/48 Inches
    Product Weight
    6.3 Pounds
    Reviews
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    LG Ceiling Cassette Mini Split LGRED° Heat Pump System - 4-Zone - 42k BTU Outdoor - 9k + 9k + 9k + 18k Indoor - 21.5 SEER2 - R-32
    LG KUMXA421A 3-KNUDB091A KNUDB181A
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    LG KUMXA421A 3-KNUDB091A KNUDB181A
    LG KUMXA421A 3-KNUDB091A KNUDB181A
    LG KUMXA421A 3-KNUDB091A KNUDB181A
    LG KUMXA421A 3-KNUDB091A KNUDB181A
    LG KUMXA421A 3-KNUDB091A KNUDB181A
    LG KUMXA421A 3-KNUDB091A KNUDB181A
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